| Porvoo to Castelli Calepio | 1,205.35 mi (1,939.82 km) |
| Porvoo to Castelnovo ne' Monti | 1,269.71 mi (2,043.40 km) |
| Porvoo to Castelnuovo Berardenga | 1,317.25 mi (2,119.91 km) |
| Porvoo to Castelnuovo di Porto | 1,378.17 mi (2,217.95 km) |
| Porvoo to Castelnuovo di Verona | 1,199.46 mi (1,930.34 km) |
| Porvoo to Castelnuovo Rangone | 1,251.62 mi (2,014.28 km) |
| Porvoo to Castelvetrano | 1,667.03 mi (2,682.83 km) |
| Porvoo to Castelvetro di Modena | 1,254.44 mi (2,018.83 km) |
| Porvoo to Castenaso | 1,243.64 mi (2,001.44 km) |
| Porvoo to Castenedolo | 1,206.96 mi (1,942.42 km) |
| Porvoo to Castiglion Fiorentino | 1,309.86 mi (2,108.01 km) |
| Porvoo to Castiglione del Lago | 1,320.78 mi (2,125.59 km) |
| Porvoo to Castiglione delle Stiviere | 1,207.07 mi (1,942.60 km) |
| Porvoo to Castrolibero | 1,512.56 mi (2,434.22 km) |
| Porvoo to Castrovillari | 1,478.86 mi (2,379.99 km) |
